Luohan Academy


Data Sharing and Market Power with Two-Sided Platforms

Speakers : Thomas Philippon


Aug 3, 2021, Tue

Eastern Daylight Time:  10-11:30am

China Standard Time: 10-11:30pm

Central European Summer Time:  4-5:30pm


Thomas Philippon (NYU)

Thomas Philippon is the Max L. Heine Professor of Finance at New York University, Stern School of Business. Professor Philippon was named one of the “top 25 economists under 45” by the IMF in 2014. He has won the 2013 Bernácer Prize for Best European Economist under 40, the 2010 Michael Brennan & BlackRock Award, the 2009 Prize for Best Young French Economist, and the 2008 Brattle Prize for the best paper in Corporate Finance. Professor Philippon has studied various topics in macroeconomics and finance: systemic risk, crisis resolution mechanisms, the dynamics of corporate investment and household debt, and the size of the finance industry. His recent work has focused on the Eurozone crisis, financial regulation, and the market power of large firms.

Topic:  Data Sharing and Market Power with Two-Sided Platforms

Abstract: We study an economy where consumers and merchants interact on a two-sided platform. The platform gathers consumer data and sells it to merchants. Data sharing increases gains from trade by improving match quality, but also generates two externalities which increase the market power of the platform and lower merchant entry. The gatekeeper externality arises from the platform’s control over access to consumers. The copycat externality derives from its ability to compete with its own merchants. These effects are not internalized by consumers and data sharing can be socially excessive. We study implications for the regulation of digital versus traditional platforms.

Join Zoom Webinar:


Meeting ID: 954 4626 6086

Passcode: 981638

Meeting instructions:

-  The webinar will take place via Zoom, it will last for 90 minutes.

-  Please mute your microphone during the talk, this permits better sound quality by our speakers.

-  You are encouraged to ask questions or provide comments during the seminar.   

Forthcoming webinars by:

Professor Shangjin Wei (Columbia), Aug 10

Professor Manju Puri (Duke), Aug 24

Professor Ron Kaniel (Rochester), Sep 13

Professor Liyan Yang (Toronto), Sep 23

Professor Zheng Song (CUHK), Oct 19

Professor Darrell Duffie (Stanford), Nov 9

Professor Catherine Tucker (MIT), TBD

Professor Patrick Bolton (Columbia), TBD

Luohan Webinar is a regular event of the Academy purported to provide a platform for world-class scholars to present their frontier research and exchange views on digital technology and digital economy, among other related themes. We believe that truth can only be uncovered through open and critical discussions.

Past Luohan Webinar:

          July 13, 2021, David Autor (MIT) on “New Frontiers: The Origins and Content of Work, 1940-2018”

          Jun 15, 2021, Erik Brynjolfsson (Stanford) on “Digital Capital and Superstar Firms”

          May 20, 2021, Wensheng Peng (CICC) on “Some thoughts on the Economic Impact of Digital Transformation”

          Apr. 13, 2021, Ruixue Jia (UCSD) on “Entrepreneurial Reluctance: Talent and Firm Creation in China”

          Mar 25, 2021, Francesco D’Acunto (Boston College) on “Fintech and Consumer Finance” 

          Mar 15, 2021, Yangqing Jia (Alibaba) on “Artificial Intelligence: Past, Present and Future”

          Feb 23, 2021,  Wei Xiong (Princeton) on “A Model of Cryptocurrencies”

          Feb 1, 2021,   Brian Fath (IIASA & Towson), Roger Koppl (Syracuse), Roberto Cazzola Gatti (KLI & Tomsk State University) on “The Nature of Economic Emergence: Discovering your Niche in the Platform Ecology”

         Jan 26, 2021,  Haoxiang Zhu (MIT) on “On Interest-Bearing Central Bank Digital Currency in the United States”

         Jan 12, 2021,  Pan Jun (SAIF, SJTU) on “Fintech Adoption and Household Risk-Taking”

         Dec 15, 2020,  Zhiguo He (Chicago) on “Open Banking: Credit Market Competition When Borrowers Own the Data”

         Dec 7, 2020,  Raghavendra Rau (Cambridge) on “Law, Trust, and the Development of Crowdfunding”

         Dec 4, 2020,  Robert Townsend (MIT) on “Optimized Payment and Financial Infrastructure under Distributed Ledgers and Cryptography”

         Nov 9, 2020,  Neng Wang (Columbia) on “Implications of Stochastic Transmission Rates for Managing Pandemic Risks”

         Oct 27, 2020,  Sir Chris Pissarides (LSE) on “Productive Robots and Industrial Employment”

         Oct 19, 2020,  Xavier Vives (IESE), Elena Carletti (Bocconi), Stijn Claessens (BIS), Antonio Fatas (INSEAD) on “The Bank Business Model in the Post-Covid 19 World”

         Sep 22, 2020, Xavier Vives (IESE) on “Digital Disruption in Banking”

Sep 8, 2020, Soumitra Dutta (Cornell), “Measuring Digital Economy”

         Aug 31, 2020, Lin William Cong (Cornell),  “Economic Data Science”

         Jul 15, 2020, Alberto G. Rossi (Georgetown), “Robo-advisors for Investment, Consumption and Savings Decisions”

         Jun 18, 2020. Victor Couture (UC Berkeley), “Measuring real-time movement and social contact with smartphone data”

         Jun 5, 2020, Michael Weber (Chicago), “The Cost of the Covid-19 Crisis”

If you would like to participate, please contact our Economist Dr. Xijie Gao ( ).




For media inquires contact:


to leave a comment